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