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