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