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