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