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