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