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