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