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