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