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