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