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