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