One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(10,14)(11,17)(12,20)(22,24)(25,26,30,35,31,36,29,44)(27,32,39,50,40,51,45,49)(28,41,42,53,43,34,46,33)(37,48,55,52,38,56,54,47)(2,5)(3,7)(9,10,13,14)(11,18,17,15)(12,21,20,16)(19,22,23,24)(25,27,31,40)(26,32,36,51)(28,38,43,37)(29,45,30,39)(33,52,53,47)(34,48,41,56)(35,50,44,49)(42,54,46,55)(9,11)(10,15)(12,19)(13,17)(14,18)(16,22)(20,23)(21,24)(25,28,31,43)(26,33,36,53)(27,37,40,38)(29,42,30,46)(32,47,51,52)(34,44,41,35)(39,54,45,55)(48,50,56,49)(1,3,4,7)(2,6,5,8)(11,17)(15,18)(19,23)(22,24)(25,28)(26,34)(27,38)(29,46)(30,42)(31,43)(32,48)(33,35)(36,41)(37,40)(39,54)(44,53)(45,55)(47,49)(50,52)(51,56)(2,5)(6,8)(9,12,13,20)(10,16,14,21)(11,19,17,23)(15,22,18,24)(25,29,31,30)(26,35,36,44)(27,39,40,45)(28,42,43,46)(32,49,51,50)(33,34,53,41)(37,54,38,55)(47,48,52,56)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.