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