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