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