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