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