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