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