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