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