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