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