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)(19,21)(20,23)(25,26,29,32)(27,28,31,30)(9,10)(11,13)(12,14)(15,16)(17,18,22,24)(19,23,21,20)(25,27)(26,30)(28,32)(29,31)(9,10)(11,13)(12,14)(15,16)(17,19,22,21)(18,23,24,20)(25,26,29,32)(27,28,31,30)(1,2)(3,6)(4,5)(7,8)(9,10)(11,15)(12,14)(13,16)(17,20)(18,19)(21,24)(22,23)(25,27)(26,28)(29,31)(30,32) involution — undirected(1,3,4,7)(2,6,5,8)(9,11)(10,13)(12,16)(14,15)(17,21,22,19)(18,20,24,23)(25,28)(26,31)(27,32)(29,30)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.