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