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