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