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