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