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