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