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