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