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