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