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