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