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