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