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