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