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