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