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