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