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