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