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