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)(35,38)(36,43)(37,40)(39,44)(41,45)(42,48)(46,47) involution — undirected(1,3,7,14)(2,8,6,11)(4,12,13,5)(9,16,15,10)(17,18,22,23)(19,21,25,30)(20,24,27,31)(26,29,28,32)(35,41)(38,45)(42,47)(46,48)(2,6)(4,13)(5,12)(8,11)(18,23)(20,27)(21,30)(26,28)(33,34,37,40)(35,38,41,45)(36,39,44,43)(42,46,47,48)(1,4)(2,9)(3,12)(5,14)(6,15)(7,13)(8,16)(10,11)(17,19,22,25)(18,21,23,30)(20,28,27,26)(24,32,31,29)(33,34)(35,38)(36,39)(37,40)(41,45)(42,46)(43,44)(47,48)(1,5,7,12)(2,10,6,16)(3,13,14,4)(8,15,11,9)(17,20)(18,24)(19,26)(21,29)(22,27)(23,31)(25,28)(30,32)(33,35)(34,38)(36,42)(37,41)(39,46)(40,45)(43,48)(44,47)(1,6,7,2)(3,11,14,8)(4,15,13,9)(5,16,12,10)(17,21)(18,25)(19,23)(20,29)(22,30)(24,28)(26,31)(27,32)(33,36,37,44)(34,39,40,43)(35,42,41,47)(38,46,45,48)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.