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