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