One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,8)(5,7)(6,10)(11,15)(12,14)(13,16)(17,18,20,25,21,26,30,38,22,24,31,36,32,37,42,46)(19,23,28,34,29,35,41,45,27,33,39,43,40,44,47,48)(1,3)(2,6)(4,11)(5,10)(7,9)(8,13)(12,16)(14,15)(17,19)(18,23)(20,28)(21,29)(22,27)(24,33)(25,34)(26,35)(30,41)(31,39)(32,40)(36,43)(37,44)(38,45)(42,47)(46,48) involution — undirected(3,10)(6,9)(11,16)(13,15)(18,24)(19,27)(25,36)(26,37)(28,39)(29,40)(38,46)(41,47) involution — undirected(2,7)(6,9)(8,14)(13,15)(19,27)(23,33)(28,39)(29,40)(34,43)(35,44)(41,47)(45,48) involution — undirected(1,4,5,12)(2,8,7,14)(3,11,10,16)(6,13,9,15)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.