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