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