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