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