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)(17,18,22,27)(19,23,30,26)(20,31,34,47)(21,35,36,38)(24,39,41,33)(25,32,42,29)(28,43,45,46)(37,48,40,44)(1,3)(2,7)(4,11)(5,13)(6,12)(8,15)(9,10)(14,16)(17,19,22,30)(18,23,27,26)(20,28,34,45)(21,29,36,32)(24,37,41,40)(25,38,42,35)(31,43,47,46)(33,44,39,48)(1,4,6,5)(2,8,9,14)(3,11,12,13)(7,15,10,16)(17,20,32,48,19,28,21,33,22,34,29,44,30,45,36,39)(18,24,38,43,26,40,25,31,27,41,35,46,23,37,42,47)(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)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.