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