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