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