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