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