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