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