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