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