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