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