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)(17,18,23,27)(19,22,28,24)(20,29,31,25)(21,26,32,30)(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)(17,19,23,28)(18,24,27,22)(20,21,31,32)(25,26,29,30)(33,35,38,39)(34,36,41,44)(37,45,46,42)(40,47,48,43)(3,10)(4,12)(6,9)(7,14)(17,20,23,31)(18,25,27,29)(19,21,28,32)(22,30,24,26)(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)(17,20)(18,25)(19,21)(22,30)(23,31)(24,26)(27,29)(28,32)(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)(17,21)(18,26)(19,20)(22,29)(23,32)(24,25)(27,30)(28,31)(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)(17,22,23,24)(18,19,27,28)(20,30,31,26)(21,29,32,25)(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.