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