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