One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(3,7)(9,10,12,13)(11,14,15,16)(17,18,22,23)(19,24,27,32)(20,28,29,25)(21,26,30,31)(1,2)(3,6)(4,5)(7,8)(17,19)(18,24)(20,21)(22,27)(23,32)(25,31)(26,28)(29,30) involution — undirected(10,13)(14,16)(17,20,23,28,22,29,18,25)(19,26,24,21,27,31,32,30)(1,3,4,7)(2,6,5,8)(17,18,22,23)(19,24,27,32)(20,28,29,25)(21,26,30,31)(2,5)(6,8)(9,11,12,15)(10,14,13,16)(17,21,18,26,22,30,23,31)(19,25,32,29,27,28,24,20)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.