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