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