In order to view deadlock information in SQLserver (2012 and beyond), you need to have VIEW SERVER STATE permission. The deadlock reports are part of the default trace, called the System Health Session:
Open this Event_File, it may take a while for all events to load from the file. After that, from the Extended Events menu, choose Grouping, and group on NAME.
Click OK and the events are grouped by, well, name:
Open up the XML_deadlock_report and chose one of the deadlock reports. Click on the DEAEDLOCK tab to get the graph:
If you click on the DETAILS tab, you can doubleclick on the VALUE to get the XML with all the deadlock details.