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