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