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