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