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