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