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