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