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