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