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