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