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