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