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