You can do this from the Explore tab in the app by using the filters.
- Just click on the Filters icon at the top right of screen.
- Scroll down and select the collection you would like to view on the map.
Make sure you zoom out so that you can see the full map so that all of your Favourites are visible.
Note : If you can't see your Favourites on the map, make sure you don't have any other filters set that will restrict your results.