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