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