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