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