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