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