One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,15)(4,21)(5,26)(6,13)(7,12)(8,14)(9,18)(10,25)(11,30)(16,36)(17,33)(19,35)(20,34)(22,53)(23,54)(24,38)(27,52)(28,42)(29,41)(31,39)(32,50)(37,58)(40,55)(43,48)(44,59)(45,51)(46,62)(47,56)(49,61)(57,64)(60,63) involution — undirected(1,3)(2,9,14,34)(4,22,25,50)(5,17)(6,18)(7,20)(8,19)(10,36)(11,33,42,61)(12,15,13,35)(16,24,45,31)(21,51)(23,46,55,63)(26,56,41,43)(27,57,58,44)(28,47)(29,49)(30,48)(32,38)(37,62)(39,53)(40,59)(52,60)(54,64)(1,4,8,25)(2,10)(3,16,19,45)(5,27,29,58)(6,31,7,24)(9,32)(11,40)(12,39)(13,38)(14,21)(15,36)(17,46,49,63)(18,50,20,22)(23,30,55,28)(26,52)(33,60)(34,53)(35,51)(37,41)(42,54)(43,59)(44,48,57,47)(56,64)(61,62)(1,5,6,28,8,29,7,30)(2,11,12,41,14,42,13,26)(3,17,18,47,19,49,20,48)(4,23,24,27,25,55,31,58)(9,33,15,43,34,61,35,56)(10,37,38,40,21,52,39,54)(16,44,22,46,45,57,50,63)(32,59,51,60,53,64,36,62)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.