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