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