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