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