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