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