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