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