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