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