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)(27,37,45,49,39,32,40,47)(28,41,46,52,43,34,44,50)(38,48,54,55,42,51,53,56)(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)(28,42)(29,39)(30,40)(31,45)(33,47)(34,51)(35,37)(36,49)(38,43)(41,48)(44,54)(46,53)(50,56)(52,55)(2,5)(3,7)(9,11,13,18)(10,15,14,21)(12,20,19,17)(16,24,22,23)(26,33)(28,43)(30,31)(32,47)(34,52)(35,36)(37,49)(38,42)(40,45)(41,50)(48,56)(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)(25,28,29,43)(26,34,35,41)(27,38,39,42)(30,44,31,46)(32,48,37,51)(33,50,36,52)(40,53,45,54)(47,55,49,56)(2,5)(6,8)(10,14)(15,21)(16,22)(23,24)(27,39)(28,43)(32,37)(34,41)(40,45)(44,46)(47,49)(50,52) 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.