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