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