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