Hi @AB
Hope you're doing well.
As per my research and understanding, you can't use listItemUniqueId as an item-id in https://graph.microsoft.com/v1.0/me/drive/items/{item-id}/ endpoint.
However, you can always pass a item-id of an item present in SharePoint List (in above endpoint). Please note that Items in a SharePoint document library can be represented as a listItem or driveItem resource.
For listing the items of a drive, use this endpoint- https://graph.microsoft.com/v1.0/me/drive/root/children
For listing the children of a driveItem, say a folder- https://graph.microsoft.com/v1.0/me/drive/items/{item-id}/children
Furthermore, you can replace item-id of folder in above endpoint by item-id of a residing file using Graph API response.
Hope this helps.
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