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