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