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