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