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