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