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