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