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