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