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