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