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