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