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