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