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