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