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