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