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