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