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