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