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