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