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