Most expats visiting Munich like to live in central areas, such as Geiseng, Neuhausen - Nymphenburg, and Berg-am-Laim. You will also find them in peripheral areas like Garching.
There are also lot of great places where expats meet up in Munich, and these areas are mostly in Westend and Altstadt.
You will also find expats in the restaurants and cafes across Munich, as these happen to be some of their favourite chill out spots.