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