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