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