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