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