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