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