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)(13,16)(19,23)(22,24)(25,26)(27,31)(28,32)(29,30)(1,3)(2,6)(4,5)(7,8)(18,21)(22,24)(25,27,30,28)(26,31,29,32)(1,4,7,6)(2,8,5,3)(9,10,12,14)(11,13,15,16)(17,18,20,21)(19,22,23,24)(25,28,30,27)(26,31,29,32)(1,5,7,2)(3,4,8,6)(9,11)(10,13)(12,15)(14,16)(17,19,20,23)(18,22,21,24)(25,29,30,26)(27,31,28,32)(1,6,7,4)(2,8,5,3)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.