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