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