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