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