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