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