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