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