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