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)(17,18,23,26)(19,28,30,25)(20,22,27,24)(21,32,29,31)(2,6)(7,8)(9,11)(10,13)(12,15)(14,16)(17,19,23,30)(18,25,26,28)(20,31,27,32)(21,22,29,24)(1,3,5,4)(2,7,6,8)(17,20,22,26,23,27,24,18)(19,28,21,31,30,25,29,32)(1,3,5,4)(2,7,6,8)(11,15)(13,16)(17,21,24,19,23,29,22,30)(18,25,27,31,26,28,20,32)(1,4,5,3)(2,7,6,8)(17,22,23,24)(18,20,26,27)(19,29,30,21)(25,31,28,32)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.