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