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