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