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