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