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