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