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