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