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