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)(7,11)(12,15)(14,16)(17,18,21,26,22,25,32,38)(19,23,29,35,28,34,42,46)(20,24,31,37,30,36,43,47)(27,39,41,48,40,33,44,45)(1,3)(2,7)(4,11)(5,14)(6,12)(8,15)(9,16)(10,13)(17,19,21,29,22,28,32,42)(18,23,26,35,25,34,38,46)(20,27,31,41,30,40,43,44)(24,33,37,45,36,39,47,48)(17,20)(18,24)(19,27)(21,31)(22,30)(23,33)(25,36)(26,37)(28,40)(29,41)(32,43)(34,39)(35,45)(38,47)(42,44)(46,48) involution — undirected(1,4,6,5)(2,8,9,13)(3,11,12,14)(7,15,16,10)(18,25)(23,34)(24,36)(26,38)(33,39)(35,46)(37,47)(45,48)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.