There's no officially prescribed way that I'm aware of, but this is a quick way to do it;
In these example, I have one object with a lot of loose parts that are all, themselves, manifold.
To modify a single object with multiple meshes
Enter edit mode on the object with Tab;
Change your pivot point to "Individual Origins";
Scale the meshes down to the desired separation;
Set the pivot point back to "Median Point"
Scale the meshes back up to the desired display size;
To use separate objects, one mesh each
I hit space (or F3, or whatever your search key is set to) and search for "Separate";
Then, I select "loose parts";
Now, search for, and select, "Set Origin"
Then select "To Geometry";
Each mesh will have it's own object. Now change your pivot point to "Individual origins";
Now, with all the objects selected, scale them down to a desired spacing;
Change your pivot point back to "Median Point", then scale up to the desired final size;