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