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