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