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