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