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