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