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)(19,28)(20,31)(21,26)(22,27)(23,24)(25,34)(29,40)(30,41)(32,44)(33,37)(35,38)(36,42)(39,45)(43,48)(46,47)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,14)(13,16)(17,19,22,23)(18,24,27,28)(20,29,33,34)(21,35,36,30)(25,37,40,31)(26,41,42,38)(32,45,46,43)(39,44,48,47)(9,11)(10,13)(12,16)(14,15)(17,20,23,34,22,33,19,29)(18,25,28,31,27,40,24,37)(21,32,35,45,36,46,30,43)(26,39,41,44,42,48,38,47)(3,8)(5,7)(10,14)(11,16)(17,21,22,36)(18,26,27,42)(19,30,23,35)(20,32,33,46)(24,38,28,41)(25,39,40,48)(29,43,34,45)(31,44,37,47)(2,6)(5,7)(10,14)(13,15)(18,27)(21,36)(24,28)(25,40)(30,35)(31,37)(32,46)(43,45) involution — undirectedA 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.