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