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