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