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