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