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