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