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