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