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