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