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