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