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