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