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