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