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