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