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