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