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