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)(17,18,24,28,23,29,22,30)(19,31,33,42,34,25,35,45)(20,36,38,26,21,27,39,44)(32,46,48,43,37,41,47,40)(1,2,5,6)(3,7,4,8)(9,10)(11,15)(12,14)(13,16)(17,19)(18,25)(20,37)(21,32)(22,35)(23,34)(24,33)(26,43)(27,41)(28,45)(29,31)(30,42)(36,46)(38,47)(39,48)(40,44)(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(17,20)(18,26)(19,32)(21,23)(22,38)(24,39)(25,40)(27,30)(28,36)(29,44)(31,43)(33,47)(34,37)(35,48)(41,45)(42,46)(1,3,5,4)(2,8,6,7)(11,16)(13,15)(17,21,23,20)(18,27,29,36)(19,32,34,37)(22,38,24,39)(25,41,31,46)(26,28,44,30)(33,48,35,47)(40,42,43,45)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(17,22,23,24)(18,28,29,30)(19,33,34,35)(20,38,21,39)(25,42,31,45)(26,36,44,27)(32,47,37,48)(40,46,43,41)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.