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