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