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