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