They will likely be looking for soft / interpersonal skills and general personality things. Things like:
- are you easy-going or hard work to interact with, and hence how will you fit in with the rest of the team?
- do you finish what you start, or get easily distracted?
- are you enthusiastic and motivated, or just in it for the steady wage?
- can you communicate clearly and articulately or do you grunt and nod?
- are you organised or scattered in your approach? do you plan in advance or react to problems as they arise?
This interview is a chance not just to answer their questions but look at the above areas and push them proactively. So if they ask "tell me about your previous role" type questions, take the chance to say stuff like "That one really suited my organised approach to work, I was able to liaise with Jim the project manager to identify all the main priorities and tasks etc etc".
Do this subtly and you'll do well. Non-subtle responses will seem like you're trying to play them - a very bad vibe to give off.
Be natural, friendly, enthusiastic, and above all honest (it shows when we're not, believe me!), and good luck.