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