Does Microsoft Graph support Sharepoint Server (2013, 2016 etc)?

From the information I've read online, Microsoft Graph supports Sharepoint Online.

But, I couldn't find any information regarding Microsoft Graph's support for Sharepoint Server (2013, 2016 etc)

Would Sharepoint REST APIs be the only way to integrate with Sharepoint Server?

If not, where can I find information regarding Graph and Sharepoint Server integration. Thanks!