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