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