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