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