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