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