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)(19,28)(20,24)(21,34)(22,27)(23,31)(25,29)(26,33)(30,41)(32,43)(35,39)(36,44)(37,48)(38,47)(40,45)(42,46) involution — undirected(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)(17,19,29,44,20,30,35,47,22,32,45,48,33,46,21,31)(18,23,34,42,26,37,40,43,27,38,39,41,24,36,25,28)(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)(17,20,22,33)(18,24,27,26)(19,30,32,46)(21,29,35,45)(23,36,38,37)(25,39,40,34)(28,41,43,42)(31,44,47,48)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.