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