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