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