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