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