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