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