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