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