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