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