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