Login to OneDrive at https://www.office.com using your SU email and password.
Select the Recycle Bin on the left hand side.
Items that have been deleted from OneDrive will be listed
Select the item you wish to restore from the list and choose Restore at the top of the screen.
**If you have deleted the item from the Recycle bin and would like to restore it choose Second-stage recycle bin listed below your Recycle bin list.
From here you will see a list of items that have been deleted from the Recycle bin.
Select the item you would like to restore from the Second stage recycle bin and choose Restore at the top of the page.