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