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