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