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