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