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