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