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