For Attachment Items in any list of SharePoint Online, graph explorer can get only Attachments property which contains value “true” or “false”.
Using Rest API we can easily expand and grab the attached links. However, Using Graph Explorer we can not expand the Attachments property.
The below query I have tried in Graph Explorer: https://graph.microsoft.com/v1.0/sites/{site-id}/lists/{list-id}/items/{item-id}
Attachments: true
How can we get the attachments.
As @user2250152 said, currently this is not supported in Graph API. You could submit the feature request here: https://techcommunity.microsoft.com/t5/microsoft-365-developer-platform/idb-p/Microsoft365DeveloperPlatform