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