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