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