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)(19,20)(21,29)(22,26)(23,24)(25,32)(27,30)(28,31)(33,34,39,40)(35,41,36,38)(37,45,47,42)(43,46,44,48)(2,4)(3,10)(8,12)(11,13)(17,19,23,27)(18,20,24,30)(21,31,32,22)(25,26,29,28)(34,40)(35,36)(42,45)(43,44)(2,4)(7,9)(8,12)(15,16)(18,24)(19,27)(21,32)(26,28)(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)(17,20)(18,19)(21,28)(22,25)(23,30)(24,27)(26,32)(29,31)(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)(17,21)(18,25)(19,22)(20,28)(23,32)(24,29)(26,30)(27,31)(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)(17,22)(18,26)(19,21)(20,29)(23,31)(24,28)(25,30)(27,32)(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.