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