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