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