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