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