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