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