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