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