I created a Google Drawing in Drive and made the text links.

I set the sharing to public and copied the link to it.

I used the embed URL function to insert it.

OR you can use the "From Drive" option and select the drawing.

  1. Google Drive, New, More, Google Drawing

  2. Insert Image

  3. Shapes, Select a shape

  4. Insert shape on the image

  5. Fill color transparent

  6. Border color transparent

  7. Insert link