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