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