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