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