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