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