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