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