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