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