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