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