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