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