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