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