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