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