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