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