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