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)(17,18,23,27)(19,24,30,39)(20,32,34,40)(21,26,22,36)(25,35,41,33)(28,42,44,47)(29,38,31,46)(37,45,48,43)(1,3,4,8)(2,5,6,7)(9,11)(10,13)(12,15)(14,16)(17,19)(18,24)(20,28)(21,29)(22,31)(23,30)(25,37)(26,38)(27,39)(32,42)(33,43)(34,44)(35,45)(36,46)(40,47)(41,48)(11,15)(13,16)(17,20,21,35,23,34,22,33)(18,25,36,40,27,41,26,32)(19,28,29,45,30,44,31,43)(24,37,46,47,39,48,38,42)(2,6)(3,8)(11,15)(13,16)(17,21,23,22)(18,26,27,36)(19,29,30,31)(20,33,34,35)(24,38,39,46)(25,40,41,32)(28,43,44,45)(37,47,48,42)(2,6)(5,7)(10,14)(13,16)(19,30)(20,34)(24,39)(25,41)(29,31)(32,40)(33,35)(38,46) 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.