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