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