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