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