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