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