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