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