You can also open this graph with free yEd Graph Editor with more features as illustrated below: 1. Download this Graph XML and save it to your local disk, with name such as graph.graphml 2. Download free graph editor to visualize this xml file. http://www.yworks.com/en/products/yfiles/yed/ 3. Install yEd Graph Editor and launch it. 4. Open saved file: graph.graphml 5. Adjust layout method to show this diagram correctly from menu: Layout -> Orthogonal -> Classic 6. In the popup window: Orthogonal Layout setting, click "Grouping" tab: select "Fix Contents of Groups" in Group Layout Policy option. 7. Click "Ok" button.