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