One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(17,18,22,27)(19,23,30,26)(20,31,33,36)(21,25,35,42)(24,38,40,28)(29,37,34,41)(32,44,46,47)(39,45,48,43)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,16)(13,14)(17,19,22,30)(18,23,27,26)(20,28,33,38)(21,29,35,34)(24,36,40,31)(25,37,42,41)(32,43,46,45)(39,47,48,44)(2,6)(3,8)(10,14)(15,16)(17,20,30,38,22,33,19,28)(18,24,23,36,27,40,26,31)(21,32,34,45,35,46,29,43)(25,39,37,47,42,48,41,44)(2,6)(5,7)(9,11,13,12)(10,15,14,16)(17,21,22,35)(18,25,27,42)(19,29,30,34)(20,32,33,46)(23,37,26,41)(24,39,40,48)(28,43,38,45)(31,44,36,47)(9,12,13,11)(10,15,14,16)(17,19,22,30)(18,23,27,26)(20,28,33,38)(21,34,35,29)(24,36,40,31)(25,41,42,37)(32,45,46,43)(39,44,48,47)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.