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)(38,56)(39,59)(40,46)(41,49)(43,58)(44,55)(45,57)(48,64)(50,63)(51,61)(52,62)(53,60)(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)(34,41,46,62)(37,52,55,49)(38,48,58,51)(39,53,57,50)(42,56,47,43)(44,60,54,63)(45,64,59,61)(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)(38,52,58,49)(39,53,57,50)(41,56,62,43)(44,61,54,64)(45,63,59,60)(3,15)(8,23)(13,24)(14,29)(16,17)(22,28)(27,32)(30,31)(33,37,39,38,40,55,57,58)(34,43,45,44,46,56,59,54)(35,48,50,52,36,51,53,49)(41,60,61,42,62,63,64,47)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.