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