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