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