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