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