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