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