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