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