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