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