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