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