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