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)(19,31)(20,35)(21,27)(22,28)(23,29)(24,30)(25,33)(26,34)(32,43)(36,48)(37,41)(38,44)(39,45)(40,46)(42,47)(2,5)(6,8)(9,10)(11,14)(12,13)(15,16)(17,19,23,33,24,34,22,20)(18,25,28,31,30,35,29,26)(21,32,38,37,40,47,39,36)(27,41,45,43,46,48,44,42)(1,3,4,7)(2,6,5,8)(10,13)(11,15)(17,20,22,34,24,33,23,19)(18,26,29,35,30,31,28,25)(21,37,39,32,40,36,38,47)(27,43,44,41,46,42,45,48)(9,11,12,15)(10,14,13,16)(17,21,24,40)(18,27,30,46)(19,32,34,47)(20,36,33,37)(22,39,23,38)(25,41,35,48)(26,42,31,43)(28,45,29,44)(10,13)(14,16)(17,22,24,23)(18,28,30,29)(19,20,34,33)(21,38,40,39)(25,31,35,26)(27,44,46,45)(32,37,47,36)(41,42,48,43)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.