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