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