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