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