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