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