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