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