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