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