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