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