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