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