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