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