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