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