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