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