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