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