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