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