they list some of the organisations on the orientation part of the website. But each campus has different clubs organised by students and the student assoc.
Some that i know of are JAUWS - Japanese animation at uws, there is a gay club/society, sporting groups, and so on.
JAUWS is based at penrith btw *blatant advertisement*, and they were looking at trying to set up at blacktown if there was interest... they tried at parra but parra were a bunch of snobs and were more interested in themselves rather than the anime.