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