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