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