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