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