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)(18,24)(19,29)(21,22)(26,39)(27,28)(31,43)(32,33)(34,42)(35,37)(38,41)(45,46)(47,48) involution — undirected(1,3)(2,6)(4,11)(5,9)(7,15)(8,13)(10,12)(14,16)(17,18,22,24,23,28,21,27)(19,30,32,41,33,25,29,38)(20,34,35,42,36,26,37,39)(31,40,45,47,46,44,43,48)(3,9)(6,13)(10,11)(14,15)(17,19)(18,25)(20,31)(21,29)(22,32)(23,33)(24,38)(26,40)(27,41)(28,30)(34,44)(35,45)(36,46)(37,43)(39,47)(42,48) involution — undirected(1,4,5,12)(2,7,8,16)(3,10,9,11)(6,14,13,15)(17,20,23,36)(18,26,28,34)(19,31,33,46)(21,37,22,35)(24,39,27,42)(25,40,30,44)(29,43,32,45)(38,47,41,48)(2,8)(6,13)(7,16)(14,15)(17,21,23,22)(18,27,28,24)(19,29,33,32)(20,35,36,37)(25,41,30,38)(26,39,34,42)(31,45,46,43)(40,47,44,48)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.