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