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