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