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