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)(19,21)(20,24)(22,27)(23,25)(26,28)(29,32)(30,31)(1,2)(3,4)(9,11,13,12)(10,14,16,15)(17,19,21,18,23,27,22,25)(20,26,28,24,30,32,29,31)(2,4)(9,11,13,12)(10,15,16,14)(17,20,23,30)(18,24,25,31)(19,26,27,32)(21,28,22,29)(9,12,13,11)(10,14,16,15)(17,21)(19,27)(20,28)(22,23)(26,32)(29,30)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.