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