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