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