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