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