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