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