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