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