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