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