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