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