It would show a map with pins for graves.
I was recently looking for the same thing and did not find it,
I found this map that appears to be based on where ancestor was born
note that I use a computer - I think there may be various similar options on the FamilySearch app for smart devices that may not exist on the computer version - you should check there.
Check out the FamilySearch Family Tree app and then use the menu option "Map My Ancestors". It uses the location feature on your mobile device and information from the FamilySearch Family Tree. If burial information is listed in the Family Tree, you will be able to see it on this map.