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