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