One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11)(4,15)(5,10)(6,7)(8,14)(9,13)(12,16)(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)(1,3,7,14)(2,8,6,11)(4,12,13,5)(9,16,15,10)(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)(2,6)(8,11)(9,15)(10,16)(19,26)(23,30)(27,31)(28,32)(34,41)(35,44)(38,45)(42,48) involution — undirected(1,4)(2,9)(3,12)(5,14)(6,15)(7,13)(8,16)(10,11)(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)(2,10,6,16)(3,13,14,4)(8,15,11,9)(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)(1,6,7,2)(3,11,14,8)(4,15,13,9)(5,16,12,10)(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.