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