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