Ask what you will be doing day-to-day. Understand what service delivery means, and really know what and NOT what you want in terms work and types of work. Do you want engineering? Do you want programming? OR just general IT/admin stuff? I'd prepare now by trying to get in touch with someone in the role or a current/ex grad and asking them about their experience. Reflect on experiences you've had and review "star" interview styles.
Keep your resume to 2 pages max. in the interview be yourself! Always think about your responses and answer confidently. Research what you can about the company and understand the type of work they do and how you can fit into the company. Don't be afraid to ask lots of questions about the company to see if it's the right fit for you.
No specific advice really, just the usual preparation for interviews. Practice some sample questions with yourself or someone else, make sure your resume is accurate and be yourself.
Relax and be yourself. There is such a thing as being over prepared or trying to anticipate questions. Just have a think about why you want the job and why you want to work for the company. Also be prepared to answer some classic interview questions about when you were challenged/strengths/weaknesses
Stay calm and answer to the best of your knowledge. You will learn more in your first year as a graduate then your entire 3-4 years of your bachelor degree, and they know this so they don't expect you to know much straight out of uni.
Be self-aware, be flexible, and know yourself. Align your strengths with that of the company you seek to join, and accept your weaknesses if you want to address them and excel forward.
read the first few pages of the annual report, although it is aimed towards shareholders it contains key information on company values, key projects we are working on and generally all the things that the company wants the public to know and love.
Be motivated to become a part of the team, and to apply your skills to help the company achieve their goals, and your goals. It helps to know what your goals are, which I didn't always know.
Relax, read through the company website to get an idea of what they do and the values that they will be looking for in you. Find some sample behavioural interview questions online and practice your answers to them (especially if you've never been to a behavioural interview before). It's ok if you don't have all of the answers, just be honest and try to remain professional.
Make sure you understand what our company does and what that might involve.
Don't let the fact that you've never heard of the company scare you off.
Know why you want to work for this company and how you can bring in skills and experience that will align with the goals of the company.
Best prepare by drawing answers from your academic and work experiences.
Have a good understanding of what the company does.
I would recommend going through past and current times that you have done work where you feel that you have demonstrated a valuable skill, like leadership or in allowing additional options to the client, etc.
Have a few interviews under your belt already. Know what you like about your industry (software engineering for me). Be honest. Do not attempt to lie on the spot because that shows very easily.