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