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)(11,15)(12,16)(13,14)(17,18,22,23)(19,27,30,24)(20,31,34,25)(21,35,37,26)(28,38,44,32)(29,39,46,42)(33,40,36,41)(43,47,45,48)(1,3,4,8)(2,5,6,7)(17,19)(18,24)(20,32)(21,29)(22,30)(23,27)(25,28)(26,39)(31,44)(33,47)(34,38)(35,42)(36,48)(37,46)(40,43)(41,45)(10,14)(15,16)(17,20,22,34)(18,25,23,31)(19,28,30,44)(21,36,37,33)(24,38,27,32)(26,41,35,40)(29,45,46,43)(39,47,42,48)(2,6)(5,7)(9,11,13,12)(10,15,14,16)(17,21,22,37)(18,26,23,35)(19,29,30,46)(20,33,34,36)(24,39,27,42)(25,40,31,41)(28,43,44,45)(32,47,38,48)(3,8)(5,7)(9,12,13,11)(10,16,14,15)(18,23)(19,24)(20,34)(26,35)(27,30)(28,32)(29,39)(33,36)(38,44)(42,46)(43,47)(45,48)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.