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