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