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