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