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)(19,25,27,32)(20,24)(21,23)(22,26,30,28)(29,31)(33,34,37,40,38,41,36,45)(35,42,44,47,43,39,46,48)(1,3)(2,6)(4,10)(5,11)(7,13)(8,9)(12,16)(14,15)(17,19)(18,22)(20,28)(21,27)(23,30)(24,32)(25,31)(26,29)(33,35)(34,39)(36,44)(37,46)(38,43)(40,47)(41,42)(45,48) involution — undirected(1,4,5,12)(2,7,8,14)(3,10,11,16)(6,13,9,15)(18,23)(22,30)(24,31)(25,32)(35,43)(39,42)(44,46)(47,48)(2,8)(6,9)(7,14)(13,15)(33,36,38,37)(34,40,41,45)(35,44,43,46)(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.