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