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