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