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