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