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