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