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