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