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)(20,26)(21,30)(22,25)(23,27)(28,32)(29,31) involution — undirected(1,3,5,4)(2,6,7,8)(9,11,12,15)(10,13,14,16)(17,19,22,29)(18,24,25,31)(20,23,28,21)(26,27,32,30)(10,14)(13,16)(18,25)(19,28)(20,29)(21,23)(24,26)(31,32) involution — undirected(1,4,5,3)(2,6,7,8)(17,20)(18,26)(19,23)(21,29)(22,28)(24,27)(25,32)(30,31)(17,21)(18,27)(20,28)(22,23)(24,31)(25,30) 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.