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