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