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