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