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