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