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