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