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