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