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