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