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