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