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