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