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