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