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)(11,15)(12,13)(14,16)(17,18,22,24)(19,23,21,20)(26,28)(27,31)(2,5)(6,7)(9,11,13,16)(10,14,12,15)(17,19,22,21)(18,20,24,23)(27,31)(30,32)(1,2)(3,6)(4,5)(7,8)(9,11)(10,14)(12,15)(13,16)(17,20)(18,21)(19,24)(22,23)(25,26,29,28)(27,30,31,32)(1,2)(3,7)(4,5)(6,8)(9,11)(10,15)(12,14)(13,16)(17,20)(18,19)(21,24)(22,23)(25,27)(26,30)(28,32)(29,31) involution — undirected(1,3,4,8)(2,6,5,7)(9,12,13,10)(11,15,16,14)(17,21,22,19)(18,23,24,20)(25,28,29,26)(27,32,31,30)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.