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