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