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