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