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