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