Information on culturally diverse communities is found under the "Who are we" of the area profiles. Some Community Profiles also include Communities of Interest on specific community groups.
The Census collects a wealth of information on cultural diversity; profile.id makes it simple to unpack this information. Under the "Who are we" of the area profiles (see the right-hand navigation menu) you'll find information on Ancestry, Birthplace, Language spoken at home, etc.
To get more in-depth view on particular communities, some Community profiles include Communities of Interest.