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