One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(17,18,23,28,24,29,22,27)(19,30,31,21,32,20,26,25)(9,10)(11,15)(12,13)(14,16)(17,19,24,32)(18,25,29,21)(20,27,30,28)(22,31,23,26)(2,5)(6,8)(10,13)(14,15)(17,20)(18,26)(19,28)(21,22)(23,25)(24,30)(27,32)(29,31) involution — undirected(9,11,12,16)(10,14,13,15)(17,21,24,25)(18,19,29,32)(20,22,30,23)(26,28,31,27)(1,3,4,7)(2,6,5,8)(17,22,24,23)(18,27,29,28)(19,31,32,26)(20,25,30,21)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.