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