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