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