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