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