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