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