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