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