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