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)(19,26)(20,24)(21,23)(22,25)(27,29)(28,30)(31,32)(1,3,5,4)(2,6,7,8)(17,19)(18,20)(21,24)(22,27)(23,26)(25,30)(28,31)(29,32)(9,11,12,16)(10,13,14,15)(18,23)(19,27)(20,29)(22,31)(24,28)(26,30)(1,4,5,3)(2,6,7,8)(17,20,21,26)(18,24,23,19)(22,30,31,29)(25,28,32,27)(19,27)(20,30)(22,31)(24,28)(25,32)(26,29) 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.