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