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