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