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