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