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