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