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