When DataGrip draws a diagram ("organic" layout, if that matters), the arrows between tables are labelled. Sometimes the labels add only clutter, not meaning.
How can the labels be removed?
Sure, you need to enable access through the keyboard for this type of features .. see the following photo:
1- Ctrl+S
2- Search Show Edge Labels
3- Define a Keymap
or the easy way:
Right click in an area where a table does not appear in the diagram, and click Show Edge Labels