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