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