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