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