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