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