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