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