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