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