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