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