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