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