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