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