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