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