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