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)(11,14)(12,16)(13,15)(17,18,23,28)(19,24,20,25)(21,26,30,32)(22,27,29,31)(1,3)(2,5)(4,8)(6,7)(9,11,13,12)(10,14,15,16)(17,19)(18,24)(20,23)(21,22)(25,28)(26,27)(29,30)(31,32)(9,12,13,11)(10,14,15,16)(17,20,30,29,23,19,21,22)(18,25,32,31,28,24,26,27)(2,6)(5,7)(17,21,23,30)(18,26,28,32)(19,22,20,29)(24,27,25,31)(3,8)(5,7)(17,22,30,20,23,29,21,19)(18,27,32,25,28,31,26,24)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.