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