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