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