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