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)(19,30,32,42,33,25,34,46)(20,27,38,26,21,37,36,44)(31,41,48,43,35,45,47,40)(1,3,5,8)(2,6,4,7)(9,10)(11,15)(12,14)(13,16)(17,19)(18,25)(20,35)(21,31)(22,32)(23,33)(24,34)(26,43)(27,41)(28,42)(29,30)(36,48)(37,45)(38,47)(39,46)(40,44)(1,2,5,4)(3,6,8,7)(9,11)(10,13)(12,16)(14,15)(17,20)(18,26)(19,31)(21,23)(22,36)(24,38)(25,40)(27,39)(28,37)(29,44)(30,43)(32,47)(33,35)(34,48)(41,42)(45,46)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(17,21,23,20)(18,27,29,37)(19,31,33,35)(22,36,24,38)(25,41,30,45)(26,28,44,39)(32,48,34,47)(40,46,43,42)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(17,22,23,24)(18,28,29,39)(19,32,33,34)(20,36,21,38)(25,42,30,46)(26,37,44,27)(31,47,35,48)(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.