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