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