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