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