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