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