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