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