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