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