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