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