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