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