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